a-fu aaaa aaac aaaf aaar aaas aaca aacc aacf aacr aacs aacu aafa aafc aaff aara aarc aars aaru aasa aasc aasf aass aasu aaus acaa acac acar acas acca accc accf accs accu acfc acfs acr- acra acrc acrr acrs acsa acsc acss acu- acuf acur acus afaa afar afca afcc afcs afcu affa affc affs afr- afra afrc afrs afru afsa afsc afua afus arac araf arar aras arau arc- arca arcs arfa arfc arff arfs arfu arr- arra arrc arrr arrs arru ars- arsa arsc arsu arua asaa asac asaf asar asas asau asc- asca ascc ascr asfa asra asrc asrs asru assa assc assr asss assu asur asus auaa auca aufc aufs aur- aura ausa ausu caaa caac caaf caas cac- caca cacc cacr cafa cafc caff cafs cafu cara carc carf carr cars casa casc casr cass casu cauc cauf caus ccaa ccac ccaf ccar ccas ccca cccc cccf cccs cccu ccfa ccfc ccff ccra ccrc ccrf ccrs ccsa ccsf ccss ccuc ccus cfaa cfac cfar cfca cfcf cfcs cffr cfra cfsa crac craf crar cras crau crca crcc crcr crfc crfs crsa crss crus csaa csac csar csas cscc cscf cscr cscs csfc csfr csra csrc csrs cssa cssr csua csuf csur csus cuau cuca cucc cufa cufc cuff cura curf curr curs cusa cuss cusu faaa faac faas faca facc facs fafa fafc faff fara farc farr fars faru fasa fasc fass faur fcar fcas fcca fccf fcra fcsc ffar ffcc ffff ffrr ffsa ffss frac fras frau frcc frfc frsc fsas fscc fsra fssa fssc fssf fuar fuc- fuca fufc fuff fufu fur- fura furr furs fusa fusc fuss fusu raaf raas rac- raca racc racs racu rafa rafc raff rara rarf rars rasa rasc rass rasu raua rauc rauf raus rcac rcaf rcas rccc rccs rcfc rcsa rcsc rcss rffc rras rrfc rrrr rsaa rsaf rscc rscs rsfc rssa rsua ruas ruca rufa rufc ruff rura rurc rurs ruru rusa russ rusu sa-c saac saaf saar saas saca sacc sacr sacs sacu safa safc saff safr safu sara sarc sarf sarr sars saru sasa sasc sasf sass saua sauc sauf saur saus scaa scac scaf scar scas sccc sccs scfa scfc scr- scra scrc scrs scsa scsc scsr scsu scua scur sfar sfas sfca sfcc sfcs sffc sfra sfrc sfss sfsu sraf sras srcc srfc ssaa ssac ssas ssau ssca sscc sscs ssfc ssra ssrc ssrs sssa sssc sssf ssss suar suas suc- succ sucr sucs suf- sufa sufc suff sufr sufs sufu sur- sura surc surf surr surs suru sus- susa suss susu suus uaca uafa uarc uars uaru uasa uaua ucar ucas ucca ucfa ucrc ucsa ucsc ucsf ucsu ucua ufcu uffa ufra urac uras urau urca urfa urff urra ursa urss ursu urur urus us-a usaa usac usaf usar usas usca uscc uscf uscs usfa usfc usfs usra ussa ussc ussf ussr usss ussu usua usus uuuu